Quick question about select:
  is it better to use select on a large (possibly >5,000) number of
sockets, or to split the job up amount, say, 10 or 20 threads, where each
thread has a more manageable list. If it makes any difference, each socket
sends something ata fairly low rate (>10 seconds between transmissions)
and the packets are small (<100 bytes).

Thanks

// Erik Huizing   huizing@cpsc.ucalgary.ca
// www.cpsc.ucalgary.ca/~huizing